Switch.



G. E. PALMER.

SWITQH. APPLICATION FILED JULY 6., `191.1.

Patented May 6, 1913.

0.- E. MLMBR.y

SWITCH.

APPLICATION IILEDJULX 6, 1911.

Patented May 6, v'1913.

a sanne-SHEET 2.

Patented May 6, 1913.

3 SHEETS-SHEET 3.

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UNITED STATES* PATENT OFFICE;

V jiIiAIm7II.I.E E. PALMER, OP HARTFORD, CONNECTICUT, v'AssICfNoE'Io THE HART MAN- UFACTURING COMPANY, or HARTFORD, CONNECTICUT, A CORPORATION OFNEW JERSEY. l l

SWITCH.

Patented May 6 1913.1

specificati@ f Letters Patent. Applicationl filed uly, 1911.' Seria1No;6 37, 174 5. i

Igoeoaoo.

'are' connected'. .The bridge'pieces' '3Q-i3 are connected byl and' insulated from a 'cross b a'r 5-, `to which is' c onnected a magneticcore.

.6 ofv -a` solenoid l7 mountedjon `theb'ase '1. To the crosslpiece:5` are connected guide rods 60 8 which pass through lugs 9 on fan iron frame 10 surrounding the solenoid 7. -The rods 8 have upon their'upperends nuits-1 1 which,- engaging withthe lugs' 9, limit'the r downward movement 'of the .rods 8 together A65 with theicross bar 5 and ,thev bridgepieces '3-3 ;carried'.therebyfj A mechanicaljlock is provided fonholdingthe core 6 as follows: 'Supported by lthe alii@ '-10 i s a' stationary abutment- .membr70 '12y havin arecess 13. 1 Carried by the upper TQTaZZw/wfgii ag/ concern; Beit knoiwn that 1, GRANVILLE' PAL-v MER, a citizemof the United States, 'residing` at Hartford, ount'yof Hartford','-S tateof 5 Connecticut, have invented certain new and useful Improvements -in Switches, of' which the following i's a full, clear',l and exact de'- scr'ption. A-

y invention. relates to, improvements in"v switches, and has for itsl obj ect-v to .f produce amagnetically operated switch in4 which,l uponthe closing ofthe controlling circuit, the switch is closed and mechanically locked andremains' mechanically locked until 'the l5 controlling circuit lis opened'or the *cur-rentI ,-theremfails, whereupon it 'is' vautomatically' lthe current pulsationsyrender diflic electrically hold a. switch in .tightly-- clo'eltl making-fumare;-

`a dia amfofcircuitsV 2 spectively,

;{unlocked and is'caus'ed to Open.g' v ofv my invention' isf-tof .'provide 'a-fswitch ofthis 'characterwhich-- 1s particularly adapted vfor-use on alternatl which; 'on accounlbf A. further object ing current? circuits,

o'sition,`

vfurther has Vfor its object-to produce ail frst current impulsefwilbopen Aandfmakev` vfurther attempts to' close :instead 'of remain-- in` in' a artially closed positron heffol owingisa description-oiJ ticat-ion O'f .my invention,-

-had to the accompanying d rawing's,V

vertical sectionion the .liflie andfside I elevations 'o ffa contactforming part 'ofthe'circuit Fig. 8 l1s l Re errin'g 'more particularlyT` to the dravvinigs,`1j` isla. base" havingfcontacts 2&2 and 3;3' afe-nmimadswitch armsprbriiig.

I pieces adapted to engag'ektheA contacts 2-2 the contacts bis, raisedl and maintaining that supported me'mb'e "T 14,. having a, recess 1.15. Surround'v material, vhaving one; or -morep'erforationsthe core '56,-fis' fan intermediate 217,' eachfperforation ycontaining a 4ball detentlSL-'A spring 19. within 'the core 6 tends to move-the y movable abutment upward until theupper surface'oa head' 2O engages fthe upper end .of a recess 21 in the .intermediate member. v W'fhen the" solenoid 7 is-energized',

Q-th'e core? 6 1s raised .until the' openingV 17" In4 belg whereupon the.y spring -19 forces the movable labut-ment 14 upward, causing the ball 1 8 'to lleavefthe recess' 1 5; and partially yenter' i mediate member -16 Isi positively locked. me^1 chanically mechanically* held lin' fast eI-igagemeint'iwith.A

shown in*Fi`g .l=1.j -f--l 1,-.

The.; upper part Tof* the E device provides electrofmagnetic"means'. orf breaking 'the cirbroken so long as suiiicint "current :flows through fthe.' controlling circuit," 1and@falso provides" means for releasing?. the-fcluteh mechanism which holds the core 6. :in 'ele j fated positionI -wheiheverithe controllingfcirf-105 :cuit is Open orflie current; therein fafals;

the intermediate member' comes opposite the recess 413111 the ystationaryy abutment mem-A the recess 13, witlifthe'iesult that the inter# tothe'. stationary abutment 112; and consequentlythe'brdgepiec'es are l 'circuit 10Q.. 5 'I co're 26 then "fallscausing the'lcircuit tothe' restablished-in 4 solenoid 7 .whereupon the armature 6 is caused to make another closing'movement. The solenoid-7 iss-made of comparatively; low .resistance and ofL-sufil cient strength to'give a fairly strong'clo'sfully 'raiSe't-h core 6,

-ilrlgv out. Exper ing movement .to the core/v6.. The solenoid 22 is ofl suicientl 'high resistance to "carry current for an .in efinite time without burn# ience'has shownvthat'fthe corel .6 is usually locked in positioi'iv when raised once', and if such locking does'iiot-'thentake place is practically always l kedl whe'nit rises the second time, the reason being'that. ifthe alternations'of the: current upon/the first closing of the switch were-not proper to always sure to be in proper relation to fully raise the core 6 'upon its second upward throw. In this waythe difficulty .of using a mechanically locked magnetically operated open .and is, in circuit whenever it is: closed.

=Ina similar mannerfthe switchplate' 33, ac-l lenoid 'is th v. bridge piecej engages the.=.teri n'inal plates 24-2before' locking actiontakes place, with the result that-.the projection 3 7 is lift# way lo fthife pro'ection- 37 so as :notte interiockin.. action ofthe clutch members 4carriedby t The .finventionpermits of va riousjinodifi-4 cations' and maybe' modified in'various 4forms without 'departing 'and vof the scope of tijd i. f'fWhatf I. claim-'is I from the spirit' thereof the appended claims.:

solenoids, normally open vvswitch arm conltlolled by one, and series with l'the second, a normally ai" kiekl for4 said-switch arm,

'eik-)Sed switciiarm centroiied'by the esegua,

Fand in series .withf the 'first sole oid, means 2.'Infa;switc Ve combination.. of two- 35 switch; .irma-two .independent .sleneids farf 'by Said switch arm,

they are practicallyadapted to engage said -i'iial'ly tending to vmove away lcore c'o'nnec actuating the saine,

the circuit through closed by -its respective lsolenoid when energized,.-'a lock 'for switch closing solenoid',-and aniopeni'ng derespe'ctively, .the switch arni actuated by each solenoid coi'itrlling-1,"v

the othersolenoid, one switch arm being opened. and the other.

vice for saidlcckcontrolled bythe switch f opening solenoid..l

'- v y f'3.- Inv a switch, lthe combination of a'base,A terminal-s thereon, a switch arm forsaid ter. f-

minals and normally `tending to opei'i,ak solesaid switcharm, aV second solenoid controlled a core therefor adapted.

to release said .-loc'k when .said sec'oiidsole?` r n o'id is deenergized, a circuit controller Vfor 4said first' solenoid, opened by said vsecond so-` -lenid whenV energized, circuit connections gfor said solenoids andv ler. for :said circuit connections.

a local circuit control- 4. In a switch, the combination ot a base, '.'sta'tiona-ry contacts thereon,`la` switch arm adaptedto engage said' contacts, but nor-v mally-tendingto i'iio've away therefrom, -a core connected tosa'idswitch arm, a Solenoid for said core, aook for said core, Aa projection. by which said j lock. `can befreleased,-a second solenoid 4controlled by said switch j arm,a core within said second solenoid norn ially' tending to engage -said as `to release ysaid lock,

projection so a :circuit controllerin 4series withl saidfirst solenoid and opened by lsaid second corenvhen said second solenoid is energized, circuit connections for said so-y both vofvsaid soleno'ids.v v

, -5; -In a swit h the combination of a base,

stationary :contactsQthei-eon, a switch arm ladapted' to engage said 'contacts b ut'inn-A .'mally 'tending to; ,move away therefrom, a

as olenoid y a detent .carried by said core,

core connected 'to said y'switch arm, -forv said core, va. stationary abutment cooperating-With 'said detent, a-pr-Ojection by which. said detent can be -released'- 'from .said abutrnent, a second solenoid controlled .by

said detent, aj -cir'cuitfcontrloller in said* switchi'trni, l a' .lccre' within saidsecond solenoid iiormallyf tendingI .to Aengage said Vprojection `so as to release series with-said iirst solenoid and opcnedby v'said second. core whenlsaid second solenoid -is energized,y circuitfconnections for'said solenoids, andv a-'loc'al circuit controller for both of saidfso-lenoids. v 6L In' a `switchtheconibination of abase, stationary contacts thereon, a switch arm `v therefrom, a

'tedtosaid svvitcharni,l a-solenoid for lsaid core, a dete'i'it carried by said `core,'a ls'tat'onary abut nient coperating with' f Said detent,'a projectionby. which said de;

tentv can' .be' releasedjfrom ,said abutment, a

second vsolenoid J controlled byv said switch.

contacts but nor- 1 arm, :L core within said second solenoid normally tending toengnge sind projectlon so ms to ri-lcusc said detent, a circuit controller in Series with said first solenoid and opened by said `Qecond core when said second solenoid is energized, circuit connections for said solcnoids, und a loca-l .circuit .controller for both .of said solenoids, sui/l solenoids being;r electrically independci t..v

l.7. In n switch, the comb nationof a base,

terminals-f thereon, 4:1 switch arm for saill terminals and normallytending to caen', a. `solcrmnl for closing' said switch arm, a lock for said switch arm, a second solenoid con- 'dc pendent.

GRANVILLE E. PALMER.

litnesscs i EZRAKE. SMART, Jr., GERALD XV, HART. 

